7151618868 has 24 divisors (see below), whose sum is σ = 16702001568. Its totient is φ = 2381745696.

The previous prime is 7151618857. The next prime is 7151618869. The reversal of 7151618868 is 8688161517.

It is a super-2 number, since 2×7151618868² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7151618868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7151618869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251871 + ... + 278822.

It is an arithmetic number, because the mean of its divisors is an integer number (695916732).

Almost surely, 2^7151618868 is an apocalyptic number.

It is an amenable number.

7151618868 is an abundant number, since it is smaller than the sum of its proper divisors (9550382700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7151618868 is a wasteful number, since it uses less digits than its factorization.

7151618868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531823 (or 531821 counting only the distinct ones).

The product of its digits is 645120, while the sum is 51.

The square root of 7151618868 is about 84567.2446518154. The cubic root of 7151618868 is about 1926.6439091006.

The spelling of 7151618868 in words is "seven billion, one hundred fifty-one million, six hundred eighteen thousand, eight hundred sixty-eight".